Gas burner



March 27, 1934'.

W. G. HASKELL, J-R

GAS BURNER Filed April 11, 1932 Patented Mar. 27, 1934 UNITED STATESPATENT OFFICE 2 Claims.

In the operation of gas burners of the type known as Bunsen burners asis well known the pressure of the gas and air creates a rapidly flowingcurrent of combustible mixture through the burner tube, and. which doesnot ignite until after it has passed a short distance beyond thedischarge end of the tube, and the flame is easily extinguished by aircurrents or by shaking the tube itself.

The object of my invention is to provide a gas burner of this characterof simple, durable and inexpensive construction in which when the flameis ignited a small flame will be constantly maintained close to thedischarge end of the tube to thereby maintain a flame in the mixturebeing discharged from the tube.

My invention consists in the construction, arrangement and combinationof the various parts of the device, whereby the objects contemplated areattained, as hereinafter more fully set forth, pointed out in my claims,and illustrated in the accompanying drawing, in which:

Figure 1 shows a side elevation partly in section of a gas burnerembodying my invention.

Figure 2 shows a top or plan View of same; and

Figure 3 shows an enlarged detail sectional view of a portion of thedischarge end of the burner tube.

Referring to the accompanying drawing, I have used the reference numeral10 to indicate a gas supply pipe having a nozzle 11. 12 indicates a tubesecured to the gas pipe 10 and having air openings 13 on its endadjacent to the nozzle.

The other end of the tube is formed with an inwardly extended circularflange 14, and this flange is provided with slots which are radiallyarranged and which extend from the top of the tube down to a point belowthe flange 14.

In actual practice I have found that desirable results were attainedwith slots find of an inch in width and extended down nd of an inch fromthe top of the tube.

In use, and when the gas is flowing through the tube and the gas flameis burning at the open end of the tube, the force of the mixture passingthrough the tube causes a flow of air from the exterior of the tubetoward the interior of the tube through the bottom portions of theslots, and at the same time the pressure from the interior of the tubecauses a part of the mixure of gas and air to flow outwardly andupwardly at the upper ends of the slots.

The effect of these two opposing currents is to retard the flow of gasand air within the slots and to commingle them in such manner as toproduce a small flame, the base of which is close to the tops of theslots, and this flame will remain burning even though air currents ofconsiderable force pass across the flame coming out of the tube, andeven though the tube is shaken or swung rapidly, or that if for anyreason the main flame from the burner tube should be extinguished whilethemixture was flowing through the tube, it would be instantlyre-ignited by the small flames in and above the slots.

In actual tests I have demonstrated that the amount of heat generated bya given quantity of gas is increased by the use of the slot constructionas compared with the ordinary Bunsen burner.

I claim as my invention:

1. A gas burner comprising a gas nozzle, a tube, said nozzle arranged todischarge into the lower end of said tube, the opposite end of the tubebeing formed with an inwardly projecting flange, said tube and flangebeing formed with a series of substantially radial slots, each being ofsubstantially uniform width throughout its length, and extending fromthe upper end of the tube to a point below said flange, for the purposesstated.

2. In a gas burner, the combination of a gas nozzle, a tube, said nozzlearranged to discharge into one end of the tube, said tube having aninwardly projected flange .at its opposite end, and being provided withair passageways for the admission of air toward the interior of the tubenear the flange and with gas passageways through the outer end of thetube at the flange, said passageways being united so that said air andgas may commingle therein, for the purposes stated.

WILLIS G. HASKELL, JR.

